Study on two-phase flow frictional pressure drop in narrow channel based on grey relational analysis model

Abstract

The two-phase flow frictional pressure drop is a principal parameter of boiling heat transfer in narrow channels, and is affected by many factors due to the special structure and complex flow. In order to study relevant influence factors on two-phase flow frictional pressure drop in narrow channel from the aspect of quantitative analysis, Grey Theory is applied to analyze the experimental data in narrow channel by taking water as the medium. And then the intensity sequence of the factors that have effects on two-phase friction pressure drop are confirmed to be the outlet dryness, boiling length, heat flux, inlet pressure, Reynolds of two-phase, mass flow and inlet temperature. The results showed that applying the method of Grey Theory to analyze the principal parameters of boiling heat transfer in narrow channels is feasible.